(0 18 2)(1 8 4)(3 14 6)(5 19 7)(9 12 10)(11 16 13)(15 20 17)
ALLOWS (11/8)-SEQUENCE
1: (6 12 14)

(0 18 2)(1 8 4)(3 14 10 9 12)(5 19 7)(6)(11 16 13)(15 20 17)
2: (11 16 13)

(0 18 2)(1 8 4)(3 14 10 9 12)(5 19 7)(6)(11)(13)(15 20 17)(16)
3: (3 14 10)

(0 18 2)(1 8 4)(3 9 12)(5 19 7)(6)(10)(11)(13)(14)(15 20 17)(16)
4: (5 19 7)

(0 18 2)(1 8 4)(3 9 12)(5)(6)(7)(10)(11)(13)(14)(15 20 17)(16)(19)